A health survey of petroleum asphalt workers.
D006306:Health Surveys; D006801:Humans; D006973:Hypertension / Q000453:epidemiology; D008171:Lung Diseases / Q000453:epidemiology; D009765:Obesity / Q000453:epidemiology; D009784:Occupational Diseases / Q000453:epidemiology*; D010578:Petroleum / Q000506:poisoning*; D010808:Physical Examination; D012871:Skin Diseases / Q000453:epidemiology; D012907:Smoking
D010578:Petroleum